You might wonder why you cannot simply change your location in a browser setting. The reason is that YouTube uses sophisticated geolocation detection based on your Internet Service Provider (ISP). Censorship and licensing are the two main drivers.
These are websites where you paste a YouTube URL, and they fetch it for you. Examples include HideMyAss or KProxy (if they have Japan nodes). youtube proxy japan
Depending on your technical comfort and security needs, you have three main options. You might wonder why you cannot simply change